STUDY OF GIANT-DIPOLE RESONANCE IN HOT ROTATING NUCLEUS CE-132

High-energy gamma-rays from the deexcitation of giant dipole resonance have been measured from the decay of compound nucleus Ce-132 formed by the O-16 + Sn-116 reaction at an incident particle energy of 85.0 M eV of O-18. The gamma-ray multiplicity distribution of this reaction i s calibrated with a multiplicity filter composed of 14 hexagonal BGO c rystals. The shape evolution of the Ce-132 has been studied as a func tion of spin. The results reveal that the deformation parameter of pro late Ce-132 reduces when spin increases.